how the ipod shuffle works - lithium ion polymer battery
While the iPod of 240 or 500 songs may not sound very impressive at first, you have to consider the size of the iPod Shuffle ---
There is about a quarter.
IPod Shuffle uses a USB flash drive to store music, just like the technology you find on a portable memory stick.
They are especially handy for runners or listeners who like to switch playlists frequently, as flash drives are easy to disassemble and rewrite.
When you turn on the iPod shuffle, the first thing that might make you stand out is the battery on the back.
This is a special type of rechargeable battery, similar to the charging battery in the laptop, as it uses lithium to deliver power back and forth-a lithium-
Ion polymer batteryA lithium-
The ion polymer battery is still different from the normal computer battery, because it is smaller and lighter, and it is less likely to overheat (
Despite reports that some iPods are on fire).
The battery of the IPod Shuffle is connected to the printed circuit board (PCB)
, It combines all the different parts inside the device.
Under the battery is a flash memory chip that stores all iPod music.
The front of the IPod looks a lot different.
You can find the microprocessor here, which controls the function of the iPod and randomly selects the songs you listen.
There is also a circular area that occupies most of the front. It has five small buttons (
4 Outside, 1 in the middle).
You can press these buttons to select songs when the iPod is not taken apart-
The left and right buttons skip or play back the songs, the upper and lower buttons (
Plus and minus signs on the shell)
Adjust the volume and play or pause the music with the center button.
There is a hole on one side of the headphone jack and two switches on the other: one on and off the iPod and the other on and off the Shuffle mode.
Shuffle supports seven different audio formats: AAC, protected AAC, MP3 VBR, Audible, WAV, and AIFF.
Shuffle also uses a feature in iTunes called autofill, which automatically randomly selects songs and puts as many songs as possible into Shuffle's flash drive. (
For those of us who like to make their own playlists, this option is also available and you can also choose the songs you want to upload. )
To read the randomness and patterns on the iPod Shuffle, see the next page.